20100188767 - Disk drive and write control method therein: According to one embodiment, a disk drive includes a medium scanner and a threshold manager. The medium scanner measures the write count of each head with respect to a disk. The medium scanner executes a read verify process by which data is read out from the disk, during idle state,... Agent: Knobbe Martens Olson & Bear LLP

20100188769 - Method and device for information recording/reproducing and information recording medium: In an information recording/reproducing method performing a thermo-magnetic recording, a tracking offset value of a recording light spot and/or a tracking offset value of a magnetic flux detecting element is changed in accordance with a radial position at which a tracking is performed at the present time, to make a... Agent: Mattingly & Malur, P.C.

20100188768 - Transducer for data storage device: An apparatus includes a metallic transducer and a condenser for directing electromagnetic radiation onto the transducer. The transducer includes a first section and a second section, wherein the first section is wider than the second section and has a width to length aspect ratio greater than or equal to a... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20100188770 - Data transfer apparatus: A data transfer apparatus comprises drive apparatus to move a received tape along a path in a longitudinal direction of the tape, a transducer head to transfer data to and/or from the tape, a tape lifter to contact the tape; and control apparatus operable, in response to a tape speed... Agent: Hewlett-packard Company Intellectual Property Administration

20100188771 - Magnetoresistive magnetic head: A magnetoresistive magnetic head according to one embodiment uses a current-perpendicular-to-plane magnetoresistive element having a laminate of a free layer, an intermediate layer, and a pinned layer, the pinned layer being substantially fixed to a magnetic field to be detected, wherein either the pinned layer or the free layer includes... Agent: Zilka-kotab, PC- Hit

20100188773 - Multiferroic storage medium: A data storage medium that includes a multiferroic thin film and ferromagnetic storage domains formed in the multiferroic thin film. The multiferroic thin film may be formed of at least one of BiFeO3, or any other ferroelectric and antiferromagnetic material. The ferromagnetic storage domains may be formed in the multiferroic... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20100188774 - Planar magnetic writer having offset portions: A magnetic head in one embodiment includes a bottom pole; a top pole positioned above a plane extending through the bottom pole and parallel to a plane of deposition of the bottom pole, wherein the top pole is at least partially offset from the bottom pole in a direction parallel... Agent: Zilka-kotab, PC- Ibm

20100188775 - Biasing structure for write element domain control in a magnetic writer: A magnetic writer includes a write element having a first domain pattern when in a quiescent state and a second domain pattern when in an active state. A biasing structure is configured to induce the write element into the first domain pattern when the magnetic writer is in the quiescent... Agent: Kinney & Lange, P.A.

20100188776 - System and method for cleaning a tape drive: A system, a method, and article of manufacture are employed to clean the input/output transducers on tape drives, verified by the tape drives reading alphanumeric information from data tracks and servo tracks of a cleaner tape. An aggressive cleaning frontcoat section of the cleaner tape can be used to provide... Agent: Dale F. Regelman Quarles & Brady, LLP

20100188778 - Disk drive assembly having flexible support for flexible printed circuit board: A disk drive assembly includes a movable assembly having a mounting arm, a stationary electronics module, a flexible printed circuit board (PCB) electrically connecting the movable assembly to the stationary electronics module, and a flexible support sandwiched between the flexible PCB and the mounting arm. The flexible support is attached... Agent: Patterson & Sheridan, L.L.P.

20100188779 - Suspension board with circuit: A suspension board with circuit includes a board main body portion, an auxiliary portion folded back with respect to the board main body portion, a slider disposed close to the board main body portion, and mounting thereon a magnetic head, and a light emitting element disposed close to the auxiliary... Agent: Akerman Senterfitt

20100188780 - Assembly and recording medium drive: According to one embodiment, an assembly includes a first member configured to have a first linear expansion coefficient, a second member configured to have a second linear expansion coefficient smaller than the first linear expansion coefficient, a pair of connecting members configured to connect the first member with the second... Agent: Knobbe Martens Olson & Bear LLP

20100188781 - Magentic circuit for vcm and storage device: According to one embodiment, a storage device includes at least one disk rotated by a spindle motor on a base formed of a magnetic material, a head actuator configured to access the disk, and a VCM configured to drive the actuator. A magnetic circuit of the VCM includes a top... Agent: Knobbe Martens Olson & Bear LLP

20100188782 - Magnetoresistive element and thin-film magnetic head: A magnetoresistive element includes: a detection surface that receives a magnetic field to be detected; a free layer made of a ferromagnetic material, having an end face located in the detection surface, and exhibiting a change in magnetization direction in response to the magnetic field to be detected; a pinned... Agent: Oliff & Berridge, PLC

20100188783 - Magnetic head, and disk apparatus having the same: According to one embodiment, a magnetic head of a disk apparatus includes a main magnetic pole, a recording coil, a return magnetic pole, and a side shield provided on both sides of the main magnetic pole in the width direction, apart magnetically away from the main magnetic pole. The side... Agent: Knobbe Martens Olson & Bear LLP

07/22/2010 > patent applications in patent subcategories.

20100182713 - Data storage device with both bit patterned and continuous media: Embodiments of a single data storage device with multiple different data recording media surfaces are disclosed. In one embodiment, at least one of the data recording media surfaces is conventional, such as a continuous or discrete track recording media. Another of the data recording media surfaces is a relatively high... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100182714 - Thermal-assist magnetic recording medium and magnetic recording and reproducing apparatus: A thermal-assist magnetic recording medium is provided which can accomplish a surface recording density of 1 Tbit/inch2. The thermal-assist magnetic recording medium includes: a substrate; a plurality of underlying layers formed on the substrate; a first magnetic layer formed on the underlying layers; a coupling control layer formed on the... Agent: Sughrue Mion, PLLC

20100182715 - Closed loop calibration of back emf measurement: A voice coil motor (VCM) is controlled by applying a bipolar square wave actuator current to the VCM and calibrating a back electromotive force (back-EMF) measurement on the VCM in response to the square wave actuator current. Back-EMF on the VCM is measured while an actuator arm coupled to the... Agent: David K. Lucente Seagate Technology LLC Intellectual Property Dept. - Col2lgl

20100182719 - Lubricant agent and magnetic storage device: where, R1 is a perfluoroalkyl group of C1 to C10, R2 is an organic group including at least one of three or more polar groups and carbon-carbon pi bonding, R3, R4, R5, and R6 are perfluoroalkylene groups of C1 to C4, respectively, R7 is an alkylene group or the perfluoroalkylene... Agent: Knobbe Martens Olson & Bear LLP

20100182717 - Method for manufacturing magnetic recording medium and magnetic recording-reproducing apparatus: Provided is a method for manufacturing, in a simple process, a magnetic recording medium having a distinct magnetic recording pattern formed thereon. A method for manufacturing a magnetic recording medium having a magnetically-separated magnetic recording pattern MP, the method at least including; a first step of forming a first magnetic... Agent: Sughrue Mion, PLLC

20100182718 - Systems and methods for adaptive cbd estimation in a storage device: Various embodiments of the present invention provide systems and methods for adaptive channel bit density estimation. For example, various embodiments of the present invention provide methods for adaptively estimating channel bit density. Such methods include providing a storage medium (178) that includes information corresponding to a process data set, and... Agent: Hamilton,desanctis & Cha (lsi)

20100182720 - High areal density tape format and head: A magnetic recording tape according to one embodiment includes a plurality of servo tracks, each servo track comprising a series of magnetically defined bars, wherein an average height of the bars is less than about 50 microns. A magnetic recording tape according to another embodiment includes a plurality of servo... Agent: Zilka-kotab, PC- Ibm

20100182721 - Head suspension: A head suspension has a jumper capable of protecting an insulating cover layer of the jumper from being abraded by an edge of a base plate of the head suspension. The head suspension includes the base plate, a load beam, an actuator element to be deformed in response to applied... Agent: Jordan And Hamburg LLP

20100182723 - Magnetic detector including magnetoresistive element and impact sensor: A magnetic detector includes a magnetoresistive element and an impact sensor. The magnetoresistive element has a plurality of element-constituent layers that are stacked and include a free layer having a magnetization direction that changes in response to a magnetic field to be detected by the magnetic detector. The impact sensor... Agent: Oliff & Berridge, PLC

20100177419 - Agc loop with weighted zero forcing and lms error sources and methods for using such: Various embodiments of the present invention provide systems and methods for gain control. For example, some embodiments of the present invention provide variable gain control circuits. Such circuits include a zero forcing loop generating a zero forcing feedback and a least mean square loop generating a least mean square feedback.... Agent: Hamilton,desanctis & Cha (lsi)

20100177420 - Rewriting codeword objects to magnetic data tape upon detection of an error: During a read-after-write operation on magnetic tape, a first SCO is formed which includes two encoded processed user data units and is one of T SCOs in a first SCO set. The user data units are each one of T user data units in first and second user data unit... Agent: Law Firm Of Dan Shifrin

20100177422 - Rewrite-efficient ecc/interleaving for multi-track recording on magnetic tape: For writing data to multi-track tape, a received data set is received and segmented into unencoded subdata sets, each comprising an array having K2 rows and K1 columns. For each unencoded subdata set, N1−K1 C1-parity bytes are generated for each row and N2−K2 C2-parity bytes are generated for each column.... Agent: Law Firm Of Dan Shifrin

20100177421 - Storing partial data sets to magnetic tape: Methods, logic, apparatus and computer program product write data, comprising less than a full Data Set, to magnetic tape. Data is received from a host, a do-not-interleave command is issued and C1 and C2 ECC are computed. Codeword Quad (CQ) sets are then formed. At least one CQ set of... Agent: Law Firm Of Dan Shifrin

20100177423 - Dual gain control for magnetic data storage system: A system according to one embodiment includes an analog input for receiving an analog signal; a variable gain amplifier coupled to the analog input; a first gain control circuit coupled to the variable gain amplifier for controlling the gain of the analog signal; an analog to digital converter for converting... Agent: Zilka-kotab, PC- Ibm

20100177424 - Recording multiple codeword sets during latency period: Writing data to magnetic tape is performed by receiving data from a host, establishing sub data sets, computing C1 and C2 ECC, forming Codeword Quad sets, writing a beginning Data Set Separator to a magnetic tape, writing a plurality of contiguous instances of the CQ Set to the magnetic tape... Agent: Law Firm Of Dan Shifrin

20100177426 - Magnetic recording medium and magnetic recorder: A magnetic recording medium for a hard disk drive is provided based on a thermally assisted magnetic recording technique. The magnetic recording medium includes a recording layer and a thermal conduction layer. The thermal conduction layer is formed on the recording layer. The thermal conduction layer is made of materials... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100177428 - Method and apparatus for determining a location of a defect on a storage medium: A defect is detected on a storage medium of a disk drive. A location of the defect is determined, within a smallest addressable unit of data stored on the storage medium. An indication of the location is stored in a memory. A location of a sensor of the disk drive... Agent: Marshall, Gerstein & Borun, LLP (marvell)

20100177431 - Information storage apparatus, adjustment apparatus thereof, and method for forming servo pattern: According to one embodiment, an information storage apparatus comprises a storage medium on which a first servo pattern having absolute position information and a second servo pattern having relative position information are recorded, a head configured to record and reproduce information on and from the storage medium, a recording signal... Agent: Knobbe Martens Olson & Bear LLP

20100177430 - Systems and methods for fly-height control using servo address mark data: Various embodiments of the present invention provide systems and methods for determining fly-height adjustments. For example, various embodiments of the present invention provide storage devices that include a storage medium, a read/write head assembly disposed in relation to the storage medium (278), and a SAM based fly-height adjustment circuit (214).... Agent: Hamilton,desanctis & Cha (lsi)

20100177433 - Position signal processor: In one embodiment a tape drive system comprises a reel adapted to engage a tape cartridge, the tape cartridge comprising a tape media having a servo code written along a length of the tape media, a tape head comprising at least one servo element to detect the servo code, a... Agent: Hewlett-packard Company Intellectual Property Administration

20100177434 - Position signal processor: In one embodiment a tape drive system comprises a reel adapted to engage a tape cartridge, the tape cartridge comprising a tape media having a servo code written along a length of the tape media, a tape head comprising at least one servo element to detect the servo code, a... Agent: Hewlett-packard Company Intellectual Property Administration

20100177438 - Snubber for disc drive for prevention of user reported defects: A disc drive snubber for protection of a disc drive disc from mechanical shock, the snubber positioned to limit the deflection of the disc in the operational mode, the position of the disc snubber determined in response to user reported defects. The snubber, positioned beneath the disc in near proximity... Agent: Fellers, Snider, Blankenship, Bailey & Tippens, PC (seagate Technology LLC)

20100177439 - Perpendicular media with reduced side track erasure: A media for perpendicular recording and a method of creating the media is provided. The media includes a hard recording layer and a soft underlayer (SUL). The SUL is composed of at least two anti-ferromagnetically coupled (AFC) sub-underlayers. The sub-underlayers respond to a magnetic field established during dynamic reversal with... Agent: Seagate Technology LLC C/o Murabito Hao & Barnes LLP

20100177440 - Thin film magnetic head and magnetic disk device: Foundation layers of a thin film magnetic head are disposed between insulating layers and bias magnetic field application layers, and are configured of Cr or Cr alloy. The insulating layers are configured of a Si oxide such that the Si content of the Si oxide is in the range of... Agent: Posz Law Group, PLC

20100177441 - Thin film magnetic head and method of manufacturing the same: A thin film magnetic head has a magneto-resistive (MR) effect element including an MR effect film formed by sequentially layering a magnetic pinned layer, a nonmagnetic layer and a free layer, and a pair of bias magnetic field application layers formed at junction tapered parts formed on both end parts... Agent: Posz Law Group, PLC

20100177442 - Head-slap mitigation in a data storage device: A data storage device comprises a housing, a data storage medium within the housing and a head gimbal assembly including a suspension supporting a read/write head. The read/write head is configured to store and retrieve data on the data storage medium. The read/write head is operably positioned between the data... Agent: Shumaker & Sieffert, P.A.

20100177443 - In-situ dynamic pitch and roll adjustment in hard disk drives: Disclosed is a head gimbal assembly for a hard disk drive that includes a head pivotally connected to a flexure. The flexure has a longitudinal axis. The assembly includes first and second micro-actuators that are located between the flexure and the head and spaced from the longitudinal axis. By way... Agent: Irell & Manella LLP

20100177444 - Vcm driver and pwm amplifier: The present invention provides a VCM driver realizing low power consumption and high accuracy and a PWM amplifier compensating a dead time distortion. A phase compensator, a ΔΣ modulator receiving an output signal of the phase compensator and converting the output signal to a control code of predetermined bits, a... Agent: Mattingly & Malur, P.C.

20100177446 - Microactuator with self-assembled monolayer encapsulant: A microactuator comprises a mounting block, a head suspension, a compliant joint for connecting the mounting block to the head suspension, and a piezoelectric element for deforming the compliant joint in order to rotate the head suspension with respect to the mounting block. An encapsulant covers an exposed surface of... Agent: Kinney & Lange, P.A.

20100177448 - High snr cpp reader using high frequency standing wave interference detection: An apparatus includes a current perpendicular to the plane sensing element, a DC current source connected to the sensing element, a microwave AC current source connected to supply AC current to the sensing element, and a detector for measuring a voltage representative of phase difference between the AC current and... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

07/08/2010 > patent applications in patent subcategories.

20100172045 - Calibration of an automated data storage library with a cartridge-like element: Calibration of an automated data storage library having a plurality of storage slots configured to store at least one data storage cartridge. An element is placed in one of the plurality of storage slots having a known location, the element having similar external dimensions as a data storage cartridge having... Agent: John H. Holcombe IBM Corporation,IPLaw Dept.

20100172046 - Systems and methods for equalizer optimization in a storage access retry: Various embodiments of the present invention provide data processing circuits that include a multiplexer, a memory buffer, a data processing circuit, and a channel setting modification circuit. A first input of the multiplexer receives an input data set and a second input of the multiplexer receives a buffered data set.... Agent: Hamilton,desanctis & Cha (lsi)

20100172048 - Servo patterns for patterned media: Servo patterns for patterned media. The servo pattern includes specification of cylinder/track ID with and without a Gray code. The servo pattern space is minimized by the optimum usage of the islands. This is achieved by island allocation rules to take advantage of non-magnetic island. The island allocation also provides... Agent: Hitachi Global Storage Technologies, Inc.

20100172049 - Hybrid storage apparatus and method of sharing resources therein: A hybrid storage apparatus having a plurality of storage devices and a method of sharing resources therein. The hybrid storage apparatus can include a plurality of storage device controllers to respectively control a plurality of storage devices that employ different writing methods, a system controller to exchange information with the... Agent: Stanzione & Kim, LLP

20100172050 - System and method for dynamic enablement of storage media associated with an access controller: Systems and methods for reducing problems and disadvantages associated traditional approaches to provisioning using access controllers are disclosed. A method may include storing a definition data structure in storage media associated with an access controller in an information handling system, the definition data structure including one or more parameters. The... Agent: Baker Botts L.l.p

20100172051 - Airborne particle trap within an enclosure containing sensitive equipment: A method and apparatus for a filter for filtering airborne particles present within an enclosure containing equipment sensitive is provided. The filter may be used within the enclosure of a hard disk drive. The filter may comprise a magnetic plate enclosed by a protective layer, which in turn may be... Agent: Mahamedi Paradice Kreisman LLP

20100172052 - Fall detection device, magnetic disk drive, and portable electronic apparatus: A fall detection device that is allowed to reduce the processing load put when making a determination using software, to reliably determine the start of a fall, and to make a fall prediction as necessary, and a magnetic disk drive and a portable electronic apparatus that each include the fall... Agent: Studebaker & Brackett PC

20100172053 - Novel hard bias design for extra high density recording: A hard bias structure for biasing a free layer in a MR element within a read head is comprised of a composite hard bias layer having a Co78.6Cr5.2Pt16.2/Co65Cr15Pt20 configuration. The upper Co65Cr15Pt20 layer has a larger Hc value and a thickness about 2 to 10 times greater than that of... Agent: Saile Ackerman LLC

20100172055 - Three dimensional magnetic memory and/or recording device: An electronic memory and/or recording device includes a three dimensional magnetic medium. Three dimensional magnetic medium includes a plurality of magnetic sublayers, each of the magnetic sublayers being separated from one other by non-magnetic interlayers.... Agent: Marshall, Gerstein & Borun LLP

20100172057 - Suspension gimbal designs with better dynamic performances: Gimbal designs are provided that minimize adverse dynamic performance of a HDD suspension, particularly subsequent to head-disk-interface (HDI) interactions. The improvement of operational performance can be seen in graphical representations of the vibrational modes of a gimbal mounted slider subsequent to such HDI interactions. Each gimbal design includes a ramp... Agent: Saile Ackerman LLC

20100172058 - Flexible wiring unit and electronic device: A reciprocating motion of a head unit produces a change in front-to-back length of the lower face of a flexible substrate opposing a metal base. However, between the lower face of the flexible substrate and the upper face of the metal base opposing each other, a non-conductive substrate spacer of... Agent: Ditthavong Mori & Steiner, P.C.

07/01/2010 > patent applications in patent subcategories.

20100165498 - Dependent temperature control within disk drive testing systems: A method of controlling a temperature of a subject test slot in a cluster of test slots includes evaluating a request for a temperature change for the subject test slot to determine if sufficient power is available to achieve the requested temperature change, and inhibiting the requested temperature change unless... Agent: Fish & Richardson P.C.

20100165497 - Storage apparatus, control apparatus, and control method: According to one embodiment, a storage apparatus includes: a reader configured to read a sector recorded in a storage medium; a detector configured to detect a sync mark in the sector; a determiner configured to determine the position of the data region of the sector based on the sync mark... Agent: Knobbe Martens Olson & Bear LLP

20100165500 - Thermal energy assisted medium: In order to provide a thermal energy assisted medium capable of improving anti-sliding reliability over long periods of time in low flying head conditions, while also maintaining a high SNR, a unique medium is proposed. A soft magnetic layer is formed on a substrate, a soft magnetic layer is formed... Agent: Zilka-kotab, PC- Hit

20100165501 - Transferring disk drives within disk drive testing systems: A method of transferring disk drives within a disk drive testing system includes actuating an automated transporter to retrieve multiple disk drives presented for testing, and actuating the automated transporter to deliver each retrieved disk drive to a respective test slot of the disk drive testing system and insert each... Agent: Fish & Richardson P.C.

20100165502 - Magnetic disk drive capable of refreshing data written to disk and data refresh method: According to one embodiment, the controller controls a data refresh operation. The data refresh operation comprises a refresh-data read operation of reading L blocks of data by a head from a track to be refreshed on a disk, a data backup-write operation of writing the read data by the head... Agent: Patterson & Sheridan, L.L.P.

20100165503 - Method and apparatus for recording and reading information: Disclosed are information recording/reading methods. The information recording method includes forming file data and metadata regarding the file data into recording information; dividing a predetermined recording medium into a plurality of zones when a recording mode is set; and recording file data and metadata, which are to be additionally recorded,... Agent: Sughrue Mion, PLLC

20100165504 - Method of producing magnetic recording medium, and magnetic recording and reading device: The present invention aims to provide a method of producing a magnetic recording medium which is a method of producing a magnetic recording medium having a magnetically-separated magnetic recording pattern, the method including: forming a magnetic layer on a non-magnetic substrate; then exposing a surface of the magnetic layer partially... Agent: Sughrue Mion, PLLC

20100165505 - Power supply voltage adjustment circuit and information storage device: According to one embodiment, a power supply voltage adjustment circuit includes a determination module and a voltage controller. The determination module determines whether a head is positioned on a data area specified by a command received from a host based on the relationship between the position of the head and... Agent: Knobbe Martens Olson & Bear LLP

20100165507 - Encoder module with a sliding assembly: An encoder module with a sliding assembly comprises a cover, a disk, a reading head, a bottom plate, and a sliding unit; wherein in assembly, the disk is installed at an upper front side of the bottom plate; the reading head is installed upon a front side of the sliding... Agent: Yun-long Lai

20100165508 - Magnetic layering for bit-patterned media: A perpendicular magnetic recording layer of a magnetic recording medium includes a plurality of bit-patterned magnetic islands, wherein each of the plurality of islands overlay a soft magnetic under-layer. Each of the magnetic islands includes a first magnetic sub-layer adjacent a second magnetic sub-layer, wherein the first sub-layer has a... Agent: Seagate Technology Outside Counsel Dergosits & Noah LLP

20100165509 - Perpendicular magnetic recording medium: A perpendicular magnetic recording medium, which includes a nonmagnetic substrate, and a soft magnetic layer, a first orientation control layer, a nonmagnetic intermediate layer, and a perpendicular magnetic recording layer formed sequentially on the nonmagnetic substrate. The perpendicular magnetic recording medium further includes a second orientation control layer provided between... Agent: Rabin & Berdo, PC

20100165510 - Vertical magnetic recording medium and magnetic recording reproducing apparatus: A magnetic recording medium comprising a substrate, at least one soft magnetic underlayer formed on the substrate, a perpendicular magnetic recording layer formed on the soft magnetic underlayer, and a protective layer formed on the perpendicular magnetic recording layer, is provided wherein the perpendicular magnetic recording layer is comprised of... Agent: Sughrue Mion, PLLC

20100165511 - Slider with integrated writer and semiconductor heterostucture read sensor: A slider for magnetic data recording having a semiconductor based magnetoresistive sensor such as a Lorentz magnetoresistive sensor formed on an air bearing surface of the slider body. The slider is constructed of Si, which advantageously provides a needed physical robustness as well being compatible with the construction of a... Agent: Zilka-kotab, PC- Hit

20100165513 - Write head with self-align layer and a method for making the same: A system according to one embodiment includes a write pole having an end region positioned towards an air bearing surface, a first flare point, and a second flare point positioned between the air bearing surface and the first flare point; and a shield positioned above the write pole, wherein a... Agent: Zilka-kotab, PC- Hit

20100165514 - Head supporting mechanism: A head supporting mechanism equipped with a waveguide is provided by which stiffness of the waveguide does not give a large influence to flying-heights and attitudes of a slider. In the head supporting mechanism, the waveguide provided on a suspension is arranged in such a manner that a portion of... Agent: Antonelli, Terry, Stout & Kraus, LLP

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